Finding the Fourth Proportional to 145,072,446.18, 200,199,122.99 and 78,992,786.23
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Solution
The fourth proportional to 145,072,446.18, 200,199,122.99 and 78,992,786.23 is: 109,009,580.68
Step by Step Solution
- Step 1: Write the proportion equation
145,072,446.18 : 200,199,122.99 = 78,992,786.23 : x - Step 2: Convert to fraction form
145,072,446.18/200,199,122.99 = 78,992,786.23/x - Step 3: Cross multiply
145,072,446.18x = 200,199,122.99 × 78,992,786.23 - Step 4: Simplify right side
145,072,446.18x = 15,814,286,526,087,660 - Step 5: Solve for x
x = 15,814,286,526,087,660/145,072,446.18 - Step 6: Final answer
x = 109,009,580.68
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.